<template>
  <div class="sidebar">
    <el-menu
        class="sidebar-el-menu"
        :default-active="onRoutes"
        :collapse="collapse"
        background-color="#324157"
        text-color="#bfcbd9"
        active-text-color="#20a0ff"
        unique-opened
        router
    >
      <template v-for="item in items">
        <template v-if="item.children">
          <el-submenu :index="item.code" :key="item.incodedex">
            <template slot="title">
              <i :class="item.icon"></i>
              <span slot="title">{{ item.name }}</span>
            </template>
            <template v-for="subItem in item.children">
              <el-submenu
                  v-if="subItem.children"
                  :index="subItem.code"
                  :key="subItem.code"
              >
                <template slot="title">
                  <i :class="subItem.icon"></i>
                  <span slot="title">{{ subItem.name }}</span>
                  <!-- {{ subItem.name }} -->
                </template>
                <el-menu-item
                    v-for="(threeItem,i) in subItem.children"
                    :key="i"
                    :index="threeItem.code"
                >
                  <!-- {{ threeItem.name }} -->
                  <template slot="title">
                    <i :class="threeItem.icon"></i>
                    <span slot="title">{{ threeItem.name }}</span>
                  </template>
                </el-menu-item>
              </el-submenu>
              <el-menu-item
                  v-else
                  :index="subItem.code"
                  :key="subItem.code"
              >
                <!-- {{ subItem.name }} -->
                <template slot="title">
                  <i :class="subItem.icon"></i>
                  <span slot="title">{{ subItem.name }}</span>
                </template>
              </el-menu-item>
            </template>
          </el-submenu>
        </template>
        <template v-else>
          <el-menu-item :index="item.code" :key="item.code">
            <i :class="item.icon"></i>
            <span slot="title">{{ item.name }}</span>
          </el-menu-item>
        </template>
      </template>
    </el-menu>
  </div>
</template>

<script>
import bus from '../common/bus';
import {getRequest} from '../../utils/index';
import {menus} from '../../utils/menus';


export default {
  data() {
    return {
      collapse: false,
      items: []
    };
  },
  computed: {
    onRoutes() {
      return this.$route.path.replace('/', '');
    }
  },
  created() {
    console.log("======================开始获取菜单树===========================");
    // 获取菜单树 , 通过接口获取，暂时先用常量写死
    // this.getMenu();
    this.items = menus;
    console.log(this.items)

    // 通过 Event Bus 进行组件间通信，来折叠侧边栏
    bus.$on('collapse', msg => {
      this.collapse = msg;
      bus.$emit('collapse-content', msg);
    });
  },
  methods: {
    // 获取菜单树数据
    getMenu() {
      getRequest("user-center/menu/selectMenuTree", null).then(res => {
        console.log("-------------------------------------------------")
        this.items = res.data;
      });
    }
  }
};
</script>

<style scoped>
.sidebar {
  display: block;
  position: absolute;
  left: 0;
  top: 70px;
  bottom: 0;
  overflow-y: scroll;
}

.sidebar::-webkit-scrollbar {
  width: 0;
}

.sidebar-el-menu:not(.el-menu--collapse) {
  width: 250px;
}

.sidebar > ul {
  height: 100%;
}
</style>
